Name: Air Operated Tension Brake
Brand: CAC
Price: 1850.00 USD
Availability: InStock

Mechanical Tension Brake
Mechanical Tension Brake with bearings

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Features and Benefits:

Simple rugged construction - virtually maintenance free.
Accommodates shaft sizes of 3/4", 7/8", 1", 1-1/8", 1-1/4".
Manually operated - no electrical wiring.
Provides extremely smooth tension control.
Shipped fully assembled and ready for installation.
Backed by CAC's over 50 years of experience designing and manufacturing equipment for the converting industry.

Click filename to view Specification Sheets
Filename	Description
18503-83	Mechanical Tension Brake

Air Operated Tension Brake
Air Operated Tension Brake

Features and Benefits:

Simple design.
Easy to operate.
Broad torque range.
Three friction coefficients to choose from.
Select 2, 4, 6 or 8 friction pad engagement for proper torque for your unique setups.
Accepts variable air pressure to vary the torque.
High heat dissipation.
Manufactured in the USA.
Thru bore brake - bore sizes up to 1.750" available.
Easily combined with CAC ShaftLok™ safety shaft holders or SimpLok™ shaft holders for complete unwind upgrades.

Click filename to view Specification Sheets
Filename	Description
18503-88	Model 6200 Air Operated Tension Brake
18503-340	Model 6400 Air Operated Tension Brake

Calculate your torque and horsepower requirements

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Horsepower (Heat Dissipation)
600	2.87	1250	4.63	1900	6.00
550	2.72	1200	4.51	1850	5.90
500	2.56	1150	4.39	1800	5.81
450	2.40	1100	4.26	1750	5.71
400	2.23	1050	4.14	1700	5.61
350	2.06	1000	4.01	1650	5.51
300	1.89	950	3.88	1600	5.41
250	1.72	900	3.74	1550	5.31
200	1.54	850	3.60	1500	5.20
150	1.36	800	3.46	1450	5.09
100	1.18	750	3.32	1400	4.98
50	.99	700	3.17	1350	4.87
0	.80	650	3.02	1300	4.75
ECS	HP	ECS	HP	ECS	HP
ECS=Effective Cooling Speed

Average web tension for films and foils
Material	Tension in PLI
Polystyrene Alum. Foil	.25	.50	1.0	2.0	3.0	4.0	5.0	6.0	7.0	8.0	9.0	10.0
Polyester Cellophane	.19	.38	.75	1.5	2.3	3.0	3.8	4.5	5.3	6.0	6.8	7.5
Acetate	.125	.25	.50	1.0	1.5	2.0	2.5	3.0	3.5	4.0	4.5	5.0
Polyethylene Polypropylene Nylon	.075	.15	.30	.6	.9	1.2	1.5	1.8	2.1	2.4	2.7	3.0
Saran Vinyl	.025	.05	.10	.20	.30	.40	.50	.60	.70	.80	.90	1.0
Web Thickness in mills	.00025	.0005	.001	.002	.003	.004	.005	.006	.007	.008	.009	.010

When these materials are coated with Polyethylene, Nylon, Polypropylene, EVA, or EEA, add .06 PLI per .0005" of coating thickness.

Average web tensions for paper, paperboard and laminations
Material	Tension (PLI)	Paperboard	Tension (PLI)
15 LBS./REAM 3000 SQ. FT	.50	8 PT	3
20 LBS./REAM	.75	12 PT	4
30 LBS./REAM	1.0	15 PT	5
40 LBS./REAM	1.5	20 PT	7
60 LBS./REAM	2.0	25 PT	9
80 LBS./REAM	2.5	30 PT	11
Laminations
25 LB. PAPER/ .0005 PE / .00035 FOIL / .001 PE		3 PLI
.001 CELLO / .0005 PE / .001 CELLO		1.5 PLI

Note: The above list is a guideline only. Actual tensions will vary for specific applications.

APPLICATION FORMULA:

Max. torque in lb. in. =	Max. roll dia. ttl. web tension
	2

Min. torque in lb. in. =	Core O.D. x min. ttl. web tension
	2

Max. brake RPM =	3.82 x web speed (FPM)
	Core O.D.

Min. brake RPM =	3.82 x web speed (FPM)
	Max. roll dia.

Brake horse power =	Max. ttl tension x web speed (FPM)
	33,000

Effective cooling speed =	((2 x min. RPM) + max. RPM)
	3

Tech tip: What type of brake should I use on my unwind?

Brakes